Home / 15,789.24-23,568.12-13,920.96

Finding the Fourth Proportional to 15,789.24, 23,568.12 and 13,920.96

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Solution

The fourth proportional to 15,789.24, 23,568.12 and 13,920.96 is: 20,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,789.24 : 23,568.12 = 13,920.96 : x
  2. Step 2: Convert to fraction form
    15,789.24/23,568.12 = 13,920.96/x
  3. Step 3: Cross multiply
    15,789.24x = 23,568.12 × 13,920.96
  4. Step 4: Simplify right side
    15,789.24x = 328,090,855.80
  5. Step 5: Solve for x
    x = 328,090,855.80/15,789.24
  6. Step 6: Final answer
    x = 20,779.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.